Aerosol composition

Abstract

A one-pack aqueous aerosol composition being highly secure against fire and enabling efficient adhesion of an active ingredient. This aerosol composition is a homogeneous one which comprise 10 to 60 wt % of a liquid concentrate consisting of 30 to 90 wt % of an oil such as kerosene, 5 to 50 wt % of a polyhydric alcohol such as diethylene glycol, 1 to 40 wt % of water, and 0.1 to 20 wt % of an active ingredient such as insecticide and not exhibiting any flash point at a pressure of 1 atm and 90 to 40 wt % of a propellant consisting of diethyl ether.

The invention claimed is: 
     
       1. A single phase propellant-concentrate aerosol composition for use in the spray application of an active ingredient from a pressurized container, consisting essentially of a first component (a) and a second component (b), wherein:
 component (a) is a concentrate of 10 to 60 wt % of component (a) and component (b), the concentrate consisting essentially of
 (i) an oil ingredient of 30 to 90 wt % of component (a), 
 (ii) polyol of 5 to 50 wt % of component (a), 
 (iii) water of 1 to 30 wt % of component (a), and 
 (iv) the active ingredient of 0.1 to 20 wt % of component (a); and 
 
 component (b) is a dimethyl ether propellant of 90 to 40 wt % of component (a) and component (b); 
 wherein the component (a) does not have a flash point under 1 atmosphere of pressure, 
 wherein the oil ingredient is selected from the group consisting of hydrocarbon, silicone, ester oil and the mixture, and the oil ingredient (1) is liquid under room temperature, (2) has a carbon number of 10 or more, and (3) has a flash point of 60° C. or higher, 
 wherein the polyol has a flash point of 100° C. or higher, and 
 wherein, when said aerosol composition is sprayed into the air from the pressurized container, said component (b) vaporizes in the air and said component (a) separates in the air into a hydrophilic liquid combination of polyol and water and an oleophilic liquid combination of the active ingredient and the oil ingredient. 
 
     
     
       2. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein the active ingredient is an insecticide. 
     
     
       3. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein a flash point of the polyol is higher than a flash point of the oil ingredient. 
     
     
       4. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein the oil ingredient is hydrocarbon. 
     
     
       5. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein the component (a) is a concentrate of 10 to 35 wt % of component (a) and component (b), and component (b) is dimethyl ether propellant of 90 to 65 wt % of component (a) and component (b). 
     
     
       6. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein the flash point of the oil ingredient is 60 to 100° C. 
     
     
       7. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein the oil ingredient is selected from the group consisting of Kerosene (Neothiosol), isopropyl myristate and the mixture. 
     
     
       8. A single phase propellant-concentrate aerosol composition according to  claim 1 , wherein the polyol is selected from the group consisting of diethylene glycol, diethylene glycol monoethyl ether acetate, and a mixture thereof.